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Undercarriage strength test vertical load loading device

A loading device and strength test technology, which is applied in the direction of measuring devices, aircraft component testing, mechanical component testing, etc., can solve the problems of limited vertical space and achieve the effect of ensuring accuracy

Pending Publication Date: 2021-08-06
CHINA AIRPLANT STRENGTH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The existing follow-up devices usually use two-dimensional guide rails to form a Cartesian coordinate system, but due to the limited vertical space, it is difficult to solve the vertical follow-up loading problem of the landing gear with two-dimensional guide rails in the Cartesian coordinate system

Method used

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  • Undercarriage strength test vertical load loading device

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Embodiment Construction

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention.

[0046] The front view of the embodiment of the present invention is as follows figure 1 As shown, the main part is the vertical loading beam 4 and the bottom beam 7, figure 2 It is a sectional view of the vertical loading beam 4.

[0047] The vertical loading beam 4 is a box-shaped cross-section, and there is enough space between the two webs and the upper and lower flanges. It is mainly composed of a loading beam main body 401, a beam reinforcing rib 402, and a beam cover plate 403 connected by bolts.

[0048] Loading beam body 401 as image 3 As shown, the large opening beam with U-shaped cross-section is welded by steel plates, and the lower flange and web of the beam are connecte...

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Abstract

The invention belongs to the field of structural strength tests, and discloses an undercarriage strength test vertical load loading device, which comprises a vertical joint, a force transducer, a vertical loading beam, a hydraulic actuator cylinder and a load transmission unit, the vertical loading beam is in a box shape; a piston rod of the hydraulic actuator cylinder is located in the vertical loading beam box body, and the outer cylinder end face of the hydraulic actuator cylinder is attached to and fixed to the right end face of the vertical loading beam; the vertical joint is vertically arranged, and the upper end of the vertical joint is connected with the loading false wheel; the lower end of the vertical joint is connected with a force transducer; the load transmission unit is positioned in the vertical loading beam box body; and the two ends of the load transmission unit are connected with the hydraulic actuator cylinder piston rod and the force measurement sensor respectively. The load transmission unit is used for converting the load from the hydraulic actuator cylinder piston rod into the load in the vertical direction and transmitting the load to the loading false wheel through the vertical connector. According to the invention, the chain and the force transducer, namely the loading force line, can move in the horizontal plane along with the movement of the loading false wheel, so that vertical follow-up loading is realized.

Description

technical field [0001] The invention belongs to the field of structural strength tests, in particular to a vertical load loading device for landing gear strength tests. Background technique [0002] During the strength test of aircraft landing gear, the landing gear is usually installed upside down on the support fixture, and dummy wheels are installed on the axle to realize the heading, lateral and vertical loading of the landing gear. For the vertical loading of the landing gear, the existing test technology usually adopts the method of installing a hydraulic actuator under the dummy wheel, directly loading, and the root of the actuator is fixed. If the vertical space is insufficient and the actuator cannot be installed directly, it is usually loaded in the form of a crowbar. [0003] However, due to the following two reasons, the position of the axle often changes during the test process: one is that the landing gear axle itself is deformed after being loaded, and the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00B64F5/60
CPCG01M13/00B64F5/60
Inventor 柴亚南胡波涛张丽红张昭韩雪冰山峰王刚陈超林亮亮李琦闫林
Owner CHINA AIRPLANT STRENGTH RES INST
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